spoon

Abstract

To provide a spoon which can quickly come to a standstill and is difficult to stand upside down. [Solution] The handle 10 is long, and the scooping portion 11 is continuous with the tip of the handle and is formed in the shape of a semi-elliptical spherical shell along the longitudinal direction of the handle. The bottom surface 110, in a cross section taken along the short side of the scooping portion, is formed as a plane perpendicular to the center line of the scooping portion. The left and right side surfaces 111a, 111b, in a cross section taken along the short side of the scooping portion, have an angle between the tip surface of the side surface and a vertical line perpendicular to the scooping portion within a range of 10 to 20 degrees, and the base end of the side surface, which is the connection point with the bottom surface, has a radius of curvature within a range of 5 to 15 mm.

Description

[Technical Field]

[0001] The present invention relates to a spoon. [Background technology]

[0002] There have been technologies related to spoons with high self-standing properties for some time. For example, Japanese Utility Model Laid-Open Publication No. 4-91173 (Patent Document 1) discloses a spoon- or fork-shaped tableware that has a tip on which food is placed and a handle that connects to the handle. The handle is bent and attached to the handle, and consists of a main body that extends from the handle toward the side opposite the tip, and a protruding part that protrudes from the handle toward the tip. The main body is designed so that it will not tip over when placed on a table with the tip facing up. This makes it easier to grasp the handle compared to conventional types.

[0003] Additionally, Registered Utility Model No. 3069481 (Patent Document 2) discloses a free-standing spoon that includes a scooping part and a handle extending from the rear end of the scooping part. Here, the center of gravity of the spoon is located within the curved surface of the scooping part. As a result, the spoon is able to stand on its own because the center of gravity of the spoon is located within the curved surface of the scooping part.

[0004] Japanese Patent Application Laid-Open Publication No. 2003-304965 (Patent Document 3) discloses a drinking spoon. When placed face up on a table, this spoon's handle is curved so that it is convex upward. The central region of the handle of this spoon is raised, and a protrusion that protrudes downward is formed at the rear end of the handle. The lower surface of the raised central region of the handle of this spoon is set at a height that allows at least the thumb or index finger to reach and hold it. Furthermore, this spoon has the ability to return to its original shape even if it is swayed sideways when placed face up on a table, and the bottom of the scooping portion has a flat area where it comes into contact with the table. This prevents fingers from getting dirty with soup, making it more hygienic to use than conventional spoons.

[0005] Japanese Patent Laid-Open Publication No. 2003-310412 (Patent Document 4) discloses a spoon for eating and drinking that includes a scooping part and a handle part that is continuous with the scooping part. Here, the scooping part is set to be heavy relative to the handle part, and the boundary between the bottom surface of the scooping part and the rear peripheral surface of the handle part is formed into a curved surface with an R of approximately 7 to 10. This ensures that the spoon has the restoring force to right itself even if it falls over. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Utility Model Application Publication No. 4-91173 [Patent Document 2] Registered Utility Model No. 3069481 [Patent Document 3] Japanese Patent Application Laid-Open No. 2003-304965 [Patent Document 4] Japanese Patent Application Laid-Open No. 2003-310412 Summary of the Invention [Problem to be solved by the invention]

[0007] Currently, automated devices are being introduced in manufacturing plants that produce cans containing powdered materials. These devices automatically insert spoons into the cans to scoop the powdered material. These automated devices recognize spoons placed on a table or production line and grasp them with their arms. However, the spoon must be stationary in order to grasp the spoon. However, because spoons have curved scooping surfaces, a spoon placed casually on the table or production line can sway due to the curved scooping surface and not immediately come to a standstill. Furthermore, if the spoon sways significantly due to the curved scooping surface, it can tip over and fall sideways on the table or production line. However, because the automated device grasps the spoon by adsorbing the flat surface of the spoon's handle with its arms, if the spoon sways for a long time or if the spoon is turned upside down, the automated device cannot grasp the swaying spoon or the upside-down spoon. Therefore, in the manufacturing plants, spoons are required to quickly stop when placed on the counter and not easily tip over even if they are shaken by the curved surface of the scooping part. The techniques described in the above Patent Documents 1 to 4 cannot solve these problems.

[0008] Therefore, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a spoon that can quickly come to a stop and is difficult to stand upside down. [Means for solving the problem]

[0009] The spoon according to the present invention comprises a handle, a scooping portion, a bottom portion, and left and right side portions. The handle is long, and the scooping portion is continuous with the tip of the handle and is formed in the shape of a semi-elliptical spherical shell along the longitudinal direction of the handle. The bottom portion, in a cross section taken along the short side of the scooping portion, is formed as a plane perpendicular to the center line of the scooping portion. In the cross section taken along the short side of the scooping portion, the angle between the tip surface of the side portion and a vertical line perpendicular to the bottom surface of the scooping portion is within the range of 10 to 20 degrees, and the radius of curvature of the base end of the side portion, which is the connection portion with the bottom portion, is within the range of 5 to 15 mm. [Effects of the Invention]

[0010] According to the present invention, it is possible to quickly come to a stop and make it difficult for the robot to stand upside down. [Brief explanation of the drawings]

[0011] [Figure 1] 1A and 1B are a perspective view, a plan view, and a front view showing an example of a spoon according to the present invention. [Figure 2] 1A and 1B are a plan view, a right side cross-sectional view, and a front cross-sectional view showing an example of a spoon according to the present invention. [Figure 3] 1A and 1B are a plan view, a right side cross-sectional view, and a front cross-sectional view showing an example of a spoon according to the prior art. [Figure 4] 1A and 1B are a perspective view and a cross-sectional view from the right side showing an example of a spoon according to the present invention rolling over; [Figure 5] 1A and 1B are a perspective view and a cross-sectional view from the right side showing an example of a spoon according to the present invention when it is rolling; [Figure 6] 1A and 1B are a perspective view and a cross-sectional view from the right side showing an example of a spoon according to the present invention when it rolls and then comes to rest. [Figure 7] 1A and 1B are a perspective view and a right side cross-sectional view showing an example of a conventional spoon rolling over; [Figure 8] 1A and 1B are a perspective view and a right side cross-sectional view showing an example of a conventional spoon rolling over. [Figure 9] 1A and 1B are a perspective view and a right side cross-sectional view showing an example of a spoon according to the prior art that rolls and then comes to rest. [Figure 10] 1A and 1B are a plan view, a right side view, and a front view of spoons according to Example 1-2 and Comparative Example 1-2. [Figure 11] 10A and 10B are a plan view, a right side view, and a front view of a spoon according to Comparative Example 3-6. [Figure 12] 1 is a table showing the physical properties of spoons according to Examples 1-2 and Comparative Examples 1-6 and the results of a shaking test. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings to help understand the present invention. Note that the following embodiment is an example of the present invention and is not intended to limit the technical scope of the present invention.

[0013] As shown in FIG. 1, spoon 1 according to the present invention comprises handle 10, scooping portion 11, bottom portion 110, and left and right side portions 111a, 111b (left side portion 111a and right side portion 111b).

[0014] Here, the handle 10 is provided long, and the scooping part 11 is provided continuous with the tip 10a of the handle 10 and is formed in the shape of a semi-elliptical spherical shell along the longitudinal direction of the handle 10.

[0015] 2, the bottom surface 110 of the scooping portion 11 is formed in a flat shape perpendicular to the center line C1 of the scooping portion 11 in a cross section in the short side direction of the scooping portion 11.

[0016] In addition, in the cross section of the scooping portion 11 in the short direction, the angles αa and αb between the tip surfaces 111as and 111bs of the side surfaces 111a and 111b (left side surface 111a and right side surface 111b) and the vertical lines Las and Lbs perpendicular to the bottom surface 110 of the scooping portion 11 are within a range of 10 to 20 degrees. It is more preferable that the angles αa and αb of the left side surface 111a and the right side surface 111b are within a range of 14 to 20 degrees. Here, in Figure 2, the left side surface portion 111a is bilaterally symmetrical to the right side surface portion 111b with respect to the center line C1 of the bottom surface portion 110 of the scooping portion 11 in the cross-sectional shape in the short direction of the scooping portion 11, and the angles αa and αb between the left side surface portion 111a and the right side surface portion 111b are 15 degrees.

[0017] Furthermore, the radii of curvature Rab, Rbb of base ends 111ab, 111bb of the left and right side portions 111a, 111b (left side portion 111a, right side portion 111b), which are the connection portions with the bottom portion 110, are within a range of 5 mm to 15 mm. Furthermore, it is more preferable that the radii of curvature Rab, Rbb of the base ends 111ab, 111bb of the left side portion 111a and the right side portion 111b are within a range of 10 mm to 15 mm. Here, in FIG. 2, the radii of curvature Rab, Rbb of the base ends 111ab, 111bb of the left side portion 111a and the right side portion 111b are 10 mm.

[0018] This allows the spoon to stop quickly and to be less likely to tip over sideways. Now, to explain the present invention in comparison with the prior art, spoon 2 according to the prior art comprises handle portion 20, scooping portion 21, bottom portion 210, and left and right side portions 211a, 211b (left side portion 211a and right side portion 211b) as shown in Figure 3.

[0019] Here, the handle portion 20 is elongated as described above, and the scooping portion 21 is provided continuous with the tip portion 20a of the handle portion 20 and is formed in the shape of a semi-elliptical spherical shell along the longitudinal direction of the handle portion 20.

[0020] Furthermore, in the cross section of scooping portion 21 in the short direction, bottom surface 210 is formed in an arc shape relative to center point C2 of scooping portion 21. Here, the radius of curvature R0 of bottom surface 210 of scooping portion 21 is 13.5 mm. In other words, bottom surface 210 of spoon 2 according to the prior art is not formed in a flat shape perpendicular to center line C1 of scooping portion 21.

[0021] In addition, in the cross-sectional shape of the scooping portion 21 in the short side direction, angles αa and αb between tip surfaces 211as and 211bs of the side surfaces 211a and 211b (left side surface 211a and right side surface 211b) and vertical lines Las and Lbs perpendicular to the bottom surface 210 of the scooping portion 21 are 5 degrees. Here, in FIG. 3, the left side surface 211a is symmetrical to the right side surface 211b with respect to the center line C1 of the scooping portion 21 in the cross-sectional shape of the scooping portion 21 in the short side direction.

[0022] The left and right side surfaces 211a, 211b have base ends 211ab, 211bb (left side surface 211a, right side surface 211b) that are connected to the bottom surface 210 and have radii of curvature Rab, Rbb of 5 mm.

[0023] Here, in spoon 1 according to the present invention, the cross-sectional shape in the short side direction of scooping portion 11 is such that bottom surface 110 is flat, and tip surfaces 111as, 111bs of left and right side surfaces 111a, 111b smoothly expand upward relative to bottom surface 110. In other words, scooping portion 11 of spoon 1 according to the present invention is similar in shape to a tumbler top, with the center of gravity of scooping portion 11 positioned close to bottom surface 110 and at a low position.

[0024] On the other hand, in the spoon 2 according to the prior art, the cross-sectional shape in the short direction of scooping portion 21 is such that bottom surface 210 is arc-shaped, and tip surfaces 211as, 211bs of left and right side surfaces 211a, 211b extend straight upward from bottom surface 210. In other words, spoon 2 according to the prior art resembles a simple semicircle, which positions the center of gravity of scooping portion 21 close to the center of the circle, placing the center of gravity of scooping portion 21 at a high position.

[0025] Such a large difference results in a difference in the swing time from when the spoon tilts until it stops swinging, and in a sideways inversion, where the spoon tilts and rolls over in the direction of its short side.

[0026] That is, as shown in FIG. 4, in spoon 1 according to the present invention, when right side surface 111b of scooping portion 11 is pressed with a finger and pressed against flat surface F of the table, and then the finger is released from right side surface 111b, spoon 1 according to the present invention will first try to return to its original position, and the part from tip surface 111bs of right side surface 111b of scooping portion 11 to base end portion 111bb of right side surface 111b will come into contact with flat surface F and roll.

[0027] Here, the angle αb of the tip surface 111bs of the right side surface portion 111b is in the range of 10 to 20 degrees, and the radius of curvature Rbb of the base end portion 111bb of the right side surface portion 111b is in the range of 5 to 15 mm, so that the scooping portion 11 rolls slowly on the plane F.

[0028] Next, as shown in FIG. 5, the scooping part 11 rolls from the bottom surface 110 to the base end 111ab of the left side surface 111a while contacting the plane F.

[0029] Here, the bottom surface 110 is formed in a flat shape, and the radius of curvature Rab of the base end 111ab of the left side surface 111a is in the range of 5 mm to 15 mm. As described above, the scooping portion 11 has a shape similar to a tumbler, and the center of gravity of the scooping portion 11 is located at a low position. Therefore, the rolling momentum of the scooping portion 11 immediately decreases, and the tip surface 111as of the left side surface 111a of the scooping portion 11 does not come into contact with the plane F.

[0030] 5, the scooping part 11 again tilts to the right and rolls, contacting the plane F from the bottom surface 110 of the scooping part 11 to the base end 111bb of the right side surface 111b. Here again, the rolling momentum of the scooping part 11 quickly decreases due to the tumble-top shape and the low position of the center of gravity of the scooping part 11.

[0031] As shown in FIG. 6, the scooping portion 11 comes into almost contact with the plane F at the bottom surface 110, but since the bottom surface 110 is flat, the entire surface comes into contact with the plane F, and the scooping portion 11 immediately comes to a stop.

[0032] In this way, spoon 1 according to the present invention can be made to swing for an extremely short time, and can be made to rest neatly on bottom surface 110 without tipping over sideways. As a result, the automatic device can quickly grasp spoon 1 according to the present invention with the arm, improving the productivity of cans containing spoons.

[0033] Next, let's try tilting spoon 2 according to the prior art in the same way. As shown in Figure 7, when right side surface 211b of scooping part 21 is pressed with a finger against flat surface F of the table and then the finger is released from right side surface 211b, in spoon 2 according to the prior art, scooping part 21 will first try to return to its original position, and the part from tip surface 211bs of right side surface 211b of scooping part 21 to base end 211bb of right side surface 211b will come into contact with flat surface F and roll.

[0034] Here, the angle αb of the tip surface 211bs of the right side surface 211b is 5 degrees, and the curvature radius Rbb of the base end portion 211bb of the right side surface 211b is 5 mm, so the scooping part 21 rolls on the plane F quickly.

[0035] 8, the scooping part 21 then rolls from the bottom surface 210 to the base end 211ab of the left side surface 211a, contacting the plane F.

[0036] Here, the bottom surface 210 is formed in an arc shape relative to the center line C1 of the scooping portion 21, and the radius of curvature R0 of the bottom surface 210 is 13.5 mm. In addition, the radius of curvature Rab of the base end 211ab of the left side surface 211a is 5 mm. As described above, the scooping portion 11 resembles a simple semicircle, and the center of gravity of the scooping portion 21 is located at a high position. Therefore, the rolling momentum of the scooping portion 21 is maintained, and the tip surface 111as of the left side surface 111a of the scooping portion 11 comes into contact with the plane F.

[0037] When the tip surface 111as of the left side surface portion 111a comes into contact with the plane F, the tip surface 111as of the left side surface portion 111a receives a repulsive force against the plane F, and the scooping portion 21 then tilts to the right and rolls, as shown in Fig. 8, and the bottom surface 210 of the scooping portion 21 to the base end portion 211bb of the right side surface portion 211b comes into contact with the plane F and rolls. Here, due to the simple semicircular shape of the scooping portion 21 and the height of the position of the center of gravity, it is difficult to reduce the rolling momentum of the scooping portion 21.

[0038] Then, as shown in Figure 9, the scooping portion 21 tilts to the left again and rolls, and the bottom surface 210 almost comes into contact with the plane F. However, because the bottom surface 210 is arc-shaped, the scooping portion 21 sways from side to side, and, for example, the base end 211ab of the left side surface 211a comes into contact with the plane F, and the scooping portion 21 comes to a standstill.

[0039] Here, the spoon 2 according to the prior art rolls vigorously, causing it to swing back and forth for a long time, resulting in a prolonged swinging time. Furthermore, the spoon 2 according to the prior art does not come to a complete stop on the bottom surface 210, causing it to become upside down for some reason. Therefore, the spoon 2 according to the prior art cannot prevent the swinging time from becoming upside down or the spoon 2 from becoming upside down. As a result, the automatic device is unable to grip the spoon 2 according to the prior art with its arm, resulting in a decrease in productivity of cans containing spoons.

[0040] The spoon 1 of the present invention comprises a handle portion 10, a scooping portion 11, a bottom portion 110, a left side portion 111a, and a right side portion 111b, but more specifically, the spoon 1 of the present invention comprises a front portion 112 and a rear portion 113.

[0041] As shown in Fig. 2, the radius of curvature Rc of the base end 112a of the front surface portion 112, which is the connecting portion with the bottom surface portion 110, in the longitudinal cross section of the scooping portion 11 is within a range of 20 mm to 40 mm. It is more preferable that the radius of curvature Rc of the base end 112a of the front surface portion 112 is within a range of 25 mm to 35 mm. This reduces the amount of food scooped by the scooping portion 11, shortening the shaking time and preventing the scooping portion 11 from tipping over. Here, in Fig. 2, the radius of curvature Rc of the base end 112a of the front surface portion 112 is 40 mm.

[0042] Furthermore, in the longitudinal cross section of the scooping portion 11, the radius of curvature Rd of the base end 113a of the rear surface portion 113, which is the connecting portion with the bottom surface portion 110, is within the range of 5 mm to 15 mm. It is more preferable that the radius of curvature Rd of the base end 113a of the rear surface portion 113 is within the range of 8 mm to 12 mm. This reduces the amount of food scooped by the scooping portion 11, shortening the shaking time and preventing the scooping portion 11 from tipping over. Here, in FIG. 2, the radius of curvature Rd of the base end 113a of the rear surface portion 113 is 10 mm.

[0043] In addition, in the cross-sectional shape of the scooping portion 11 in the longitudinal direction, the angle αc between the tip surface 113cs of the rear surface 113 and the vertical line Lcs perpendicular to the scooping portion 11 is within a range of 10 to 20 degrees. It is more preferable that the angle αc of the tip surface 113cs of the rear surface 113 is within a range of 12 to 18 degrees. This makes it easier for the base end portion 113a of the rear surface 113 of the scooping portion 11 to come into contact with the plane F, thereby shortening the shaking time and preventing the scooping portion 11 from tipping over. Here, in FIG. 2, the angle αc of the tip surface 113cs of the rear surface 113 is 15 degrees.

[0044] In this way, since the front surface 112 and the rear surface 113 have a predetermined arc shape, the scooping part 11 comes closer to the shape of a tumbler, and the position of the center of gravity is lowered, which shortens the swinging time and prevents the occurrence of a sideways inversion.

[0045] The spoon 2 according to the prior art also has a front surface 212 and a rear surface 213, but as shown in Figure 3, in the longitudinal cross section of scooping portion 21, the radius of curvature Rc of base end 212a of front surface 212, where it connects to bottom surface 210, is 30 mm. In addition, in the longitudinal cross section of scooping portion 21, the radius of curvature Rd of base end 213a of rear surface 213, where it connects to bottom surface 210, is 13 mm. In addition, in the longitudinal cross section of scooping portion 21, the angle αc between tip surface 213cs of rear surface 213 and a vertical line Lcs perpendicular to scooping portion 21 is 4 degrees.

[0046] In such a configuration, the front part 212 and the rear part 213 have a semi-elliptical shape, so the scooping part 21 is closer to the semi-elliptical shape and the position of the center of gravity becomes higher, which results in a longer swing time and more frequent sideways.

[0047] Here, in the cross-sectional shape of the short side of the scooping portion 11 according to the present invention, there are no particular limitations on the left-right size W of the scooping portion 11 and the up-down size H of the scooping portion 11, but for example, it is preferable that the left-right size W of the scooping portion 11 is in the range of 20 mm to 40 mm, and the up-down size H of the scooping portion 11 is in the range of 10 mm to 30 mm.

[0048] Furthermore, in the cross-sectional shape in the short side direction of the scooping portion 11 according to the present invention, the ratio β(-) obtained by dividing the size W of the scooping portion 11 in the left-right direction by the size H of the scooping portion 11 in the up-down direction is not particularly limited, but is preferably within the range of 1.50 to 2.50, for example, and more preferably within the range of 1.50 to 2.00. As a result, in the cross-sectional shape in the short side direction of the scooping portion 11, the size W of the scooping portion 11 in the left-right direction is much larger than the size H of the scooping portion 11 in the up-down direction, so that the cross-sectional shape in the short side direction of the scooping portion 11 becomes a shape that is elongated in the left-right direction of the scooping portion 11, which more closely resembles the shape of a tumbler and makes it possible to lower the position of the center of gravity.

[0049] On the other hand, when the ratio β(-) is less than 1.50, the width W of the scooping portion 11 in the cross-sectional shape in the short side direction approaches the width H of the scooping portion 11 in the vertical direction, so that the cross-sectional shape in the short side direction of the scooping portion 11 approaches a circle and the position of the center of gravity becomes higher.

[0050] In addition, in Figure 2, in spoon 1 according to the present invention, the left-right size W (mm) of scooping portion 11 is 28.00 mm, and the up-down size H (mm) of scooping portion 11 is 15.65 mm, with the ratio β(-) between these being 1.79(-). On the other hand, in Figure 3, in spoon 2 according to the prior art, the left-right size W (mm) of scooping portion 21 is 26.30 mm, and the up-down size H (mm) of scooping portion 21 is 18.70 mm, with the ratio β(-) between these being 1.41(-). In other words, the ratio β(-) of spoon 1 according to the present invention is clearly different from the ratio β(-) of spoon 2 according to the prior art.

[0051] Furthermore, in the longitudinal shape of scooping portion 11 according to the present invention, the ratio γ(-) obtained by dividing the longitudinal size L of scooping portion 11 by the left-right size W of scooping portion 11 is not particularly limited, but is preferably within the range of 2.00 to 3.00, for example, and more preferably within the range of 2.00 to 2.50. As a result, in the longitudinal shape of scooping portion 11, the longitudinal size L of scooping portion 11 is much larger than the left-right size W of scooping portion 11, so that the longitudinal shape of scooping portion 11 becomes a shape that is elongated in the longitudinal direction of scooping portion 11, making it possible to make scooping portion 11 less likely to shake.

[0052] Furthermore, in the spoon 1 according to the present invention, there is no particular limitation on the shape of the handle 10, but it may be, for example, a long oval, rectangular, polygonal, etc. as shown in Figures 1 and 2. Furthermore, there is no particular limitation on the shape of the scooping part 11, but it may be, for example, a semi-elliptical shell as shown in Figures 1 and 2, or any other shape.

[0053] Furthermore, in the spoon 1 according to the present invention, there are no particular limitations on the materials used for the handle 10 and the scooping portion 11, but examples include synthetic resins such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polylactic acid, and ABS resin.

[0054] Furthermore, there is no particular limit to the swinging time of the spoon 1 according to the present invention, but for example, it is preferable that the swinging time when either the left or right side portion 111a, 111b is pressed with a finger against a flat surface and then the finger is released is within the range of 1 to 5 seconds. [Example]

[0055] Examples and comparative examples of the present invention will be specifically described below, but the application of the present invention is not limited to these examples.

[0056] First, as Example 1, a spoon 1 according to the present invention was manufactured based on Figs. 1 and 2. Furthermore, as Example 2, another spoon 1 according to the present invention was manufactured based on Fig. 10. Furthermore, as Comparative Example 1, a spoon 2 according to the prior art was manufactured based on Fig. 3. Furthermore, as Comparative Examples 2-6, spoons 2 according to other prior art were manufactured based on Figs. 10 and 11.

[0057] As shown in FIG. 12, in Examples 1-2 and Comparative Examples 1-6, the table shows the condition of the bottom surface R0 (mm), the angle αa (αb) (degrees) of the left and right side surface portions, the radius of curvature Rab (Rbb) (mm) of the base end of the left and right side surface portions, the radius of curvature Rc (mm) of the base end of the front surface portion, the radius of curvature Rd (mm) of the base end of the rear surface portion, the angle αc (degrees) of the tip surface of the rear surface portion, the left-right size W (mm) of the scooping portion, the up-down size H (mm) of the scooping portion, and the ratio β (-) in the cross-sectional shape of the scooping portion in the short direction.

[0058] Then, for the spoons according to Examples 1-2 and Comparative Examples 1-6, a shaking test was conducted in which either the left or right side portion was pressed with a finger against a flat surface, and then the finger was released. In the shaking test, the shaking time after the finger was released was measured with a stopwatch. The shaking test was repeated a predetermined number of times, and if the spoon was able to stand upside down, it was determined that there was a standing upside down, and if the spoon was not able to stand upside down, it was determined that there was no standing upside down.

[0059] As a result, as shown in Figure 12, in Example 1, the shaking time was 3.6 seconds and no sideways handstands occurred. In Example 2, the shaking time was 1.6 seconds and no sideways handstands occurred. On the other hand, in Comparative Examples 1-6, the shaking time was increased from 5.6 seconds to 15.8 seconds and sideways handstands occurred. Therefore, it was found that the spoon according to Example 1-2 can quickly stop and is less likely to sideways handstand. [Industrial Applicability]

[0060] As described above, the spoon according to the present invention is useful not only in the food industry but also in the pharmaceutical and cosmetic industries as a measuring spoon, and is effective as a spoon that stops quickly and is difficult to turn upside down. [Explanation of symbols]

[0061] 1 spoon 10 Handle 11 Scooping section 110 Bottom part 111a Left side part 111b Right side part

Claims

1. A long handle portion, A scooping portion formed continuously with the tip of the handle and having a semi-elliptical spherical shell shape along the longitudinal direction of the handle; In a cross section of the scooping portion in the short side direction, a bottom surface portion formed in a plane perpendicular to the center line of the scooping portion; In the cross-sectional shape of the scooping portion in the short side direction, the angle between the tip surface of this side surface portion and a vertical line perpendicular to the bottom surface portion of the scooping portion is in the range of 10 degrees to 20 degrees, and the radius of curvature of the base end portion of this side surface portion, which is the connection portion with the bottom surface portion, is in the range of 5 mm to 15 mm. In the cross-sectional shape of the scooping longitudinal direction, the radius of curvature of the base end of the front surface portion, which is the connection portion with the bottom surface portion, is in the range of 20 mm to 40 mm; In the longitudinal cross-sectional shape of the scooping portion, the angle between the tip surface of the rear surface portion and the vertical line is within a range of 10 degrees to 20 degrees, and the radius of curvature of the base end portion of the rear surface portion, which is the connection portion with the bottom surface portion, is within a range of 5 mm to 15 mm; Equipped with The ratio obtained by dividing the size of the scooping portion in the short side direction by the size of the scooping portion in the vertical direction is within the range of 1.50 to 2.

50. spoon.

2. The angle between the tip surface of the side surface and the vertical line is within the range of 12 degrees to 15 degrees, The radius of curvature of the base end of the side surface portion is 10 mm, The radius of curvature of the base end of the rear surface portion is 10 mm.

2. The spoon of claim 1.

3. The angle between the tip surface of the side surface and the vertical line is within the range of 12 degrees to 15 degrees, The radius of curvature of the base end of the side surface portion is 10 mm, The radius of curvature of the base end of the front surface is within a range of 31 mm to 40 mm; The radius of curvature of the base end of the rear surface portion is 10 mm, the angle between the tip end surface of the rear surface portion and the vertical line is within a range of 14 degrees to 15 degrees; The ratio is in the range of 1.75 to 1.

79.

2. The spoon of claim 1.

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